Find the first partial derivatives of the function.
f(r, s) = r ln(r^2+s^2).

There are two first partial derivatives of : and .

Step-by-step explanation:

Let be . The quantity of first partial derivatives of a multivariate function is equal to the number of variables. For this function, there are two first partial derivatives:

m∠vru = 80°

m∠urw = 15°

step-by-step explanation:

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